Malicious PDF — malware analysis report

Static analysis result for SHA-256 525830ad1c95bbcc…

MALICIOUS

PDF

37.1 KB Created: 2020-08-27 23:13:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8beef8382dda73a48b97d0aaa355619 SHA-1: 76fa7750ba942376cc0efe715c9ebb5451ab9e91 SHA-256: 525830ad1c95bbcc4d419ee9a4878e47f68ed04753aa5233431278163f604ec1
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=tachibana+san%252527s+circumstances+with+a+man'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, some of which are to unknown domains. The document body, though partially corrupted, contains the same malicious URL and appears to be a lure, possibly to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=tachibana+san%252527s+circumstances+with+a+man In PDF document text
    • http://begiga.zendenmissoula.com/uploads/1/3/0/7/130738970/begeginave-pimumurugif-bisimuf-tetasimake.pdfIn PDF document text
    • http://files.sevenstarsamerica.org/uploads/1/3/0/8/130814633/8957423.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3935/0181/files/10971244901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0842/5116/files/melitusorep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4396/3559/files/django_delete_object.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/17797240294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8578/1397/files/minecraft_costumes_skin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55628578329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2792/2076/files/86905091161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/kalimat_ambigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/rakijurinupezewedami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5475/9069/files/subordinate_clause_sheet_ks2.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51DD 5220 bytes
SHA-256: 10e72de74101672abfbdeb21ab82cab7ef9041a8c690f540337141e9db7b0882
font_01_sfnt_off00006381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6381 10684 bytes
SHA-256: 95e32f897fa9be0dc73d81da278f980419d41486615593b4ca9bf4572dc86531

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